def istPrimzahl(n):
    prim = True
    k = 2
    while k*k <= n and prim == True:
        if n%k == 0:
            prim = False
            break
        k +=1
    return prim

t = "J"
while t == "J":
    n = int(input("Gerade Zahl größer 2: "))
    while not(n > 2 and n%2 == 0):
        n = int(input("Gerade Zahl größer 2: "))

    a = 2
    b = n-2
    while a <= n//2:
        if istPrimzahl(a):
            if istPrimzahl(b):
                break
        a += 1
        b -= 1
    print(a,"+",b,"=",n)
    t = input("Nochmal? J/N: ")